Attachment 86936 Details for Bug 69673 – disable lvds clock gating for high res displays

disable lvds clock gating for high res displays

i915-ivb-lvds-clk-gating-disable.patch (text/plain), 1.26 KB, created by Jesse Barnes on 2013-10-01 20:44:44 UTC

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Creator: Jesse Barnes

Created: 2013-10-01 20:44:44 UTC

Size: 1.26 KB

patch

obsolete

>diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
>index 96fd2ce..cca670a 100644
>--- a/drivers/gpu/drm/i915/i915_reg.h
>+++ b/drivers/gpu/drm/i915/i915_reg.h
>@@ -4338,7 +4338,9 @@
> #define FDI_RX_CHICKEN(pipe) _PIPE(pipe, _FDI_RXA_CHICKEN, _FDI_RXB_CHICKEN)
> 
> #define SOUTH_DSPCLK_GATE_D	0xc2020
>+#define  PCH_LVDSUNIT_CLOCK_GATE_DISABLE (1<<30)
> #define  PCH_DPLSUNIT_CLOCK_GATE_DISABLE (1<<29)
>+#define  PCH_LVDSUNIT2_CLOCK_GATE_DISABLE (1<<14)
> #define  PCH_LP_PARTITION_LEVEL_DISABLE  (1<<12)
> 
> /* CPU: FDI_TX */
>diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
>index 698257c..f6765e0 100644
>--- a/drivers/gpu/drm/i915/intel_pm.c
>+++ b/drivers/gpu/drm/i915/intel_pm.c
>@@ -4791,7 +4791,9 @@ static void cpt_init_clock_gating(struct drm_device *dev)
> 	 * gating for the panel power sequencer or it will fail to
> 	 * start up when no ports are active.
> 	 */
>-	I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
>+	I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE |
>+		   PCH_LVDSUNIT_CLOCK_GATE_DISABLE |
>+		   PCH_LVDSUNIT2_CLOCK_GATE_DISABLE);
> 	I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |
> 		   DPLS_EDP_PPS_FIX_DIS);
> 	/* The below fixes the weird display corruption, a few pixels shifted

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Attachments on bug 69673: 86310 | 86311 | 86312 | 86313 | 86936

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